feat(ui): drop the slash and the argument echo from the command row

The web command row renders `title · summary` from one logged command
lifecycle pair, and the two halves were written without knowing about each
other: the title was the dispatched line rebuilt from `command/run` and the
summary was `command/done`'s verbatim text, so every Access-chip pick read
`/permission workspace-write · Permission preset: workspace-write.` — the
command name twice and its argument twice.

The title is now the bare command name (no `/`, no arguments — the summary
already says what the command did), and a command handler's settlement text
never repeats the command's own name, so `/permission` returns `preset
workspace-write`. The row reads `permission · preset workspace-write`, and
the TUI notice still names the preset that now applies. The log is
unchanged: `command/run` keeps its structured name/args split for a richer
registered row.

packages/client/runtime/tests/session.spec.ts

@@ -135,7 +135,7 @@ describe('live event path', () => {
     expect(session.getSnapshot().composerPhase).toBe('blank')
     const feed = (event: SessionEvent) => { session.handleMuxEnvelope('r' as never, { type: 'session/event', sessionId: SID, event }) }
     feed(ev.commandRun(0, 'cmd-perm', 'permission', ' danger-full-access'))
-    feed(ev.commandDone(1, 'cmd-perm', 'success', 'Permission preset: danger-full-access.'))
+    feed(ev.commandDone(1, 'cmd-perm', 'success', 'preset danger-full-access'))
     const snapshot = session.getSnapshot()
     expect(snapshot.nodes.at(-1)).toMatchObject({ kind: 'command', name: 'permission' })
     expect(snapshot.composerPhase).toBe('blank')